Impact of Quebracho Tannins Supplementation on Productive and Reproductive Efficiency of Dairy Cows  

作　　者：Marwa F. A. Attia Adel N. M. Nour El-Din Samir Z. El-Zarkouny Hani M. El-Zaiat Moustafa M. Zeitoun Sobhy M. A. Sallam Marwa F. A. Attia;Adel N. M. Nour El-Din;Samir Z. El-Zarkouny;Hani M. El-Zaiat;Moustafa M. Zeitoun;Sobhy M. A. Sallam(Department of Animal and Fish Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt;Department of Arid Land Agriculture, Faculty of Meteorology, Environment and Arid Land Agriculture, Jeddah, Saudi Arabia;Department of Animal Production and Breeding, College of Agriculture and Veterinary Medicine, Qassim University, Qassim, Saudi Arabia)

机构地区：[1]Department of Animal and Fish Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt [2]Department of Arid Land Agriculture, Faculty of Meteorology, Environment and Arid Land Agriculture, Jeddah, Saudi Arabia [3]Department of Animal Production and Breeding, College of Agriculture and Veterinary Medicine, Qassim University, Qassim, Saudi Arabia

出　　处：《Open Journal of Animal Sciences》2016年第4期269-288,共20页动物科学期刊（英文）

摘　　要：This study was conducted to investigate effects of supplementing two doses of quebracho tannins (QT;100 or 200 g/cow/d;QT₁₀₀ or QT₂₀₀) pre and post parturition to thirty Holstein dairy cows on Dry Matter Intake (DMI), milk yield and composition, blood metabolites and reproductive performance for 12 weeks. There were no significant changes in DMI due to QT at transition period of dairy cows. QT supplementation at either level decreased (P 0.05) the total number of ovarian follicles, number of large follicles, diameter of largest follicle, number of small follicles, number and diameter of corpus luteum, and progesterone concentration. The inclusion of QT increased days open and number of services per conception, which consequently decreased conception rate, compared to the control cows. QT100 decreased (PThis study was conducted to investigate effects of supplementing two doses of quebracho tannins (QT;100 or 200 g/cow/d;QT₁₀₀ or QT₂₀₀) pre and post parturition to thirty Holstein dairy cows on Dry Matter Intake (DMI), milk yield and composition, blood metabolites and reproductive performance for 12 weeks. There were no significant changes in DMI due to QT at transition period of dairy cows. QT supplementation at either level decreased (P 0.05) the total number of ovarian follicles, number of large follicles, diameter of largest follicle, number of small follicles, number and diameter of corpus luteum, and progesterone concentration. The inclusion of QT increased days open and number of services per conception, which consequently decreased conception rate, compared to the control cows. QT100 decreased (P

关 键 词：Quebracho Tannin Feed Intake Milk Yield Follicular Dynamics Conception Rate 

分 类 号：S82[农业科学—畜牧学]